124. 
PROCEEDINGS OP THE ACADEMY OP 
EXO GENS. 
MORACEiE. 
Ficus. A very large specimen of F. elastica was somewliat injured. A por- 
tion of the foliage dropped off, and the remaining leaves exhibited a yellowish, 
sickly appearance for several months. 
EUPHORBIACEiE. 
EuPHOEBiA jacquiniflora was powerfully affected. All the individual plants 
of this species lost every leaf and flower, and recovered very gradually. 
PoiNSETTiA pulcherrima was affected in the same manner ; not a leaf or 
hractea remained. 
Ckoton. All the species lost their foliage, taking the spring and nearly all 
summer to recover. 
BEGONIACE^. 
Begonia. All the plants of this genus, embracing many species, suffered in 
the loss of flowers, and a part of the foliage. They all recovered, however, in 
the course of a few w eek 
PASSIFLORACE^. 
Passiflora, were but slightly affected. 
Tacsonia, of several species, all lost their leaves and young twigs, but re- 
covered. 
CRASSULACE^. 
Crassula. This genus seemed peculiarly sensitive to the gaseous influence. 
They all withered down to the root at once, and were killed outright. 
RocHEA, were not visibly injured. 
TURNERACE^. 
TuRNERA elegans lost all its foliage, and recovered again. 
CISTACE^. 
OiSTUs. Every individual of this family was immediately affected. They 
shed all their foliage, and such as were in flower dropped their bloom : they 
all recovered. 
BRASSICACE^. 
Alyssum lost all their blossoms and foliage — recovered. 
RESEDACE.E. 
Reseda lost both leaves and flowers, and recovered. 
BYTTNERIACE^. 
Mahernia odorata, and varieties, were quick to lose all their leaves and 
flowers. They remained for some time to all appearances dead, but slowly 
recovered, with the loss of all the young wood. 
TROP^OLACE^. 
Trop^olum. Some fine specimens of T. azureum, T. tricolorum, T. Jarrettii, 
and other varieties were killed at once to the ground. Although a year has 
elapsed, they have not yet exhibited signs of vegetating, although still alive. 
MALVACEiE. 
Alth^a, Malva, Abutilon, Hibiscus. Every individual in this order lost its 
entire foliage and flowers. In those of the genus Abutilon, the young wood 
was killed. They all recovered after some weeks. 
[May, 
